CN209564265U - A kind of hydraulic artificial limb knee-joint of double leval jib - Google Patents
A kind of hydraulic artificial limb knee-joint of double leval jib Download PDFInfo
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- CN209564265U CN209564265U CN201821390664.3U CN201821390664U CN209564265U CN 209564265 U CN209564265 U CN 209564265U CN 201821390664 U CN201821390664 U CN 201821390664U CN 209564265 U CN209564265 U CN 209564265U
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Abstract
The utility model relates to a kind of hydraulic artificial limb knee-joint of double leval jib, which includes a upper joint body, once joint body, two first connecting rods, two second connecting rods, a hydraulic cylinder and four connecting shafts；The fixation of upper joint body two sides plugs the first connecting shaft, the rear end fixation of upper joint body plugs the second connecting shaft, the fixation of hypozygal body bottom plugs third connecting shaft, fixation plugs the fourth connecting shaft at the top of hypozygal body, first connecting shaft both ends are movably connected with one end of two first connecting rods, and the other end of two first connecting rods is movably connected with the both ends of third connecting shaft；One end of two second connecting rods is flexibly connected the both ends of the second connecting shaft, and the two second connecting rod other ends are flexibly connected the both ends of the fourth connecting shaft, and hydraulic cylinder bottom is slidably connected with third connecting shaft, and top and the fourth connecting shaft of hydraulic cylinder are slidably connected.The utility model has movement centrode figure similar with Human Physiology knee joint, and walking step state is more natural.
Description
Technical field
The utility model relates to a kind of artificial limb knee-joints, more particularly to a kind of hydraulic artificial limb knee-joint of double leval jib.
Background technique
Due to traffic accident, disease etc., the patient of lower limb amputation gradually increases, with the reach of science, under various
Limb artificial limb constantly floods the market, and deficiency brought by limb defects is not only compensated in appearance and function, while making amputee
Normal life and work can be freely participated in, the strong will that patients with amputation returns society is met.Knee joint is as lower limb
One of core component of artificial limb, performance play decisive role to patient's gait and comfort level.Country's knee joint still belongs at present
In compare low side the case where, mechanical and vapour-pressure type knee joint, existing product is mostly used largely to limit the fortune of patient
Dynamic demand and functional requirement, it is difficult to meet the expectation of patient.
Mechanical knee joint stretches the mechanical structures such as spring and frictional damping adjuster and adjusts kneed stretching, extension by helping
And buckling, to guarantee the control of the stability and shaking peroid of knee brace phase.But due to the inherent characteristic of frictional damping,
Cause mechanical knee joint sensitivity and flexibility poor.In addition, due to adjust frictional damping can change simultaneously knee extension and
The damping of buckling both direction, so that mechanical knee joint is difficult meet the needs of patient is for comfort level.Pneumatic knee-joint uses
Air is used as damping to adjust kneed stretching, extension and buckling, although can satisfy the resistance of knee extension and buckling both direction
Buddhist nun is adjusted, but due to the compressibility of gas, the small followability of slewing range and poor sensitivity.
Summary of the invention
In view of the above problems, the object of the present invention is to provide a kind of adjusting, sensitiveer and movement is more reliable and more stable
The hydraulic artificial limb knee-joint of double leval jib.
To achieve the above object, the utility model takes following technical scheme: a kind of hydraulic artificial limb knee-joint of double leval jib,
It is characterized in that, which includes a upper joint body, once joint body, two first connecting rods, two second connecting rods, a hydraulic cylinder and four
Connecting shaft；The upper joint body two sides are fixed to plug the first connecting shaft, and the rear end fixation of the upper joint body plugs the second company
Spindle, hypozygal body bottom is fixed to plug third connecting shaft, and fixation plugs the fourth connecting shaft at the top of the hypozygal body, institute
State one end that the first connecting shaft both ends are movably connected with two first connecting rods, the other end point of two first connecting rods
It is not flexibly connected the both ends of the third connecting shaft；One end of two second connecting rods is flexibly connected second connecting shaft
Both ends, the two second connecting rod other ends are flexibly connected the both ends of the fourth connecting shaft, the hydraulic cylinder bottom with it is described
Third connecting shaft is slidably connected, and the top of the hydraulic cylinder is slidably connected with the fourth connecting shaft.
Further, the hydraulic cylinder includes cylinder body, piston, pressure accumulation sponge, the first regulating valve, the first check valve, second
Regulating valve and second one-way valve；The inboard wall of cylinder block, which encloses, sets the pressure accumulation sponge formation accumulator, and the cylinder body activity plugs
The cylinder body is divided into upper cylinder body and lower cylinder body by the piston, the lower cylinder body bottom be connected in parallel first regulating valve and
The other end of one end of first check valve, first regulating valve and the first check valve is connected in parallel the accumulator, the second tune
One end of valve and second one-way valve is saved, second regulating valve connects institute by hydraulic oil channel with the other end of second one-way valve
State upper cylinder body.
Further, the hydraulic cylinder also sets up resetting apparatus, and the resetting apparatus uses and is fixed at the lower cylinder
Intracorporal spring.
Further, the hydraulic cylinder bottom is provided with bottom link block, offers on the bottom link block for inserting
If the through-hole of the third connecting shaft, it is provided with sliding bearing in the through-hole, is connected by the sliding bearing and the third
Spindle connection, the top land of the hydraulic cylinder be provided with top link block, the top link block be provided with for it is described
The universal shaft bearing bore of the fourth connecting shaft connection is additionally provided with outside the hydraulic cylinder for adjusting to first regulating valve and second
The regulation button that section valve is operated.
Further, the upper joint body includes joint matrix, and the joint baseline top is fixedly installed for that will close
Section directly connect the standard external link block locked with receptive cavity, and joint matrix side is offered for plugging described the
The through-hole of one connecting shaft, joint matrix rear end offer the through-hole for plugging second connecting shaft.
Further, knee joint internal impact is soft when being further fixedly arranged on mitigation embolia at the top of the upper joint body
Property buffer stopper.
Further, the hypozygal body includes joint pedestal, and the joint pedestal top rear, which upwardly extends, to be provided with
Supporting element is connected, the head clearance of the joint pedestal is arranged in parallel there are two attachment base, and correspondence is set on two attachment bases
It is equipped with the through-hole for plugging the third connecting shaft, the supporting element outer end is offered for plugging the fourth connecting shaft
Through-hole.
Further, which further includes one or four cord connectors, and the four cords connector side is provided with locking
Screw hole is inserted into the locking screw holes using lock screw and is locked.
Because the utility model adopts the above technical scheme, it has the following advantages: 1, the utility model uses double leval jib
Movement mechanism, has movement centrode figure similar with Human Physiology knee joint, and walking step state is more natural.2, this is practical new
Type is provided with hydraulic cylinder, need to only adjust the first regulating valve and second and adjust and uninterrupted can be adjusted, realize compression liquid
Pressure drag Buddhist nun is adjusted, the exclusive hydraulic damping buffering device of the utility model, can be with separately adjustable kneed stretching, extension and bending knee resistance
Buddhist nun walks submissive, and joint high sensitivity is suitble to the different speeds of travel.3, it is provided at the top of the upper joint body of the utility model
Standard external link block can install truncated rectangular pyramids connector or be directly connected to receptive cavity, be suitable for various types of above-knee sections
Limb patient.
Detailed description of the invention
Fig. 1 is the structural schematic diagram of the hydraulic artificial limb knee-joint of the utility model double leval jib；
Fig. 2 is the schematic side view of the hydraulic artificial limb knee-joint of the utility model double leval jib；
Fig. 3 is the structural schematic diagram of the utility model hypozygal body；
Fig. 4 is the utility model hydraulic cylinder outside schematic diagram；
Fig. 5 is the utility model hydraulic cylinder schematic illustration；
Fig. 6 is the schematic diagram of internal structure of the utility model hydraulic cylinder.
Specific embodiment
Come to carry out detailed description to the utility model below in conjunction with attached drawing.It should be appreciated, however, that attached drawing is provided only
More fully understand the utility model, they should not be interpreted as limitations of the present invention.
As shown in Fig. 1~2, the hydraulic artificial limb knee-joint of double leval jib provided by the utility model includes a upper joint body 1, once
Joint body 2, two first connecting rods 3, two second connecting rods 4 and hydraulic cylinder 5.
1 two sides of upper joint body are fixed to plug the first connecting shaft, and the rear end fixation of upper joint body 1 plugs the second connecting shaft,
The bottom of hypozygal body 2 is fixed to plug third connecting shaft, and the top of hypozygal body 2 is fixed to plug the fourth connecting shaft, the first connection
The both ends of axis are movably connected with one end of two first connecting rods 3, and the other end of two first connecting rods 3 is movably connected with third
The both ends of connecting shaft；One end of two second connecting rods 4 is flexibly connected the both ends of the second connecting shaft, two second connecting rods 4 it is another
End is flexibly connected the both ends of the fourth connecting shaft.The bottom of hydraulic cylinder 5 is slidably connected with third connecting shaft, the top of hydraulic cylinder 5 with
The fourth connecting shaft is slidably connected.
Optionally, upper joint body 1 includes joint matrix, and joint baseline top is fixedly installed standard external link block,
Joint can directly be connect locking with receptive cavity when for knee detachment patient installation.The side of joint matrix is offered for inserting
If the through-hole of the first connecting shaft, the rear end of joint matrix offers the through-hole for plugging the second connecting shaft.
Optionally, as shown in figure 3, hypozygal body 2 includes joint pedestal 21, pedestal 21 top rear in joint, which upwardly extends, to be set
It is equipped with connection supporting element 22, the head clearance of joint pedestal 21 is arranged in parallel there are two attachment base 23, right on two attachment bases 23
It should be provided with the through-hole for plugging third connecting shaft, the outer end of supporting element 22 is offered for plugging the logical of the fourth connecting shaft
Hole offers lightening hole 24 on hypozygal body 2 to mitigate the self weight of entire hypozygal body.
Optionally, as shown in Figure 1, the hydraulic artificial limb knee-joint of the double leval jib further includes one or four cord connectors 6, four cords connect
6 side of fitting is provided with locking screw holes, and when installing for non-knee detachment patient, upper joint body 1 and truncated rectangular pyramids connector 6 pass through screw thread
Connection is locked using lock screw insertion locking screw holes after connection, knee joint is avoided to rotate left and right in use.
Optionally, it is further fixedly arranged on flexible buffer block at the top of upper joint body 1, knee joint when being effectively reduced embolia
Internal impact.
Optionally, as shown in Figure 5, Figure 6, hydraulic cylinder 5 includes cylinder body 51, piston 52, pressure accumulation sponge 53, the first regulating valve
54, the first check valve 55, the second regulating valve 56 and second one-way valve 57,51 inner wall of cylinder body, which encloses, sets the formation accumulation of energy of pressure accumulation sponge 53
Device, activity plugs piston 52 cylinder body is divided into upper cylinder body and lower cylinder body in cylinder body 51, and the connection of 51 bottom of cylinder body is connected in parallel first
The other end of one end of regulating valve 54 and the first check valve 55, the first regulating valve 54 and the first check valve 55 is connected in parallel accumulation of energy
The other end of one end of device, the second regulating valve 56 and second one-way valve 57, the second regulating valve 56 and second one-way valve 57 passes through liquid
Pressure oil passage connects upper cylinder body.Wherein, when hydraulic cylinder uses: oil liquid flows through the first adjusting in lower cylinder body oil liquid and pressure accumulation sponge 53
Valve 54 and second one-way valve 57 via oil circuit return to upper cavity, and (when compression, lower cylinder body oil liquid enters upper cylinder body and pressure accumulation sponge
In), the first check valve 55 is closed at this time, and second one-way valve 57 is opened, so need to only adjust the first regulating valve can be big to flow
It is small to be adjusted, realize that compression hydraulic damping is adjusted.When cylinder body stretching, extension, upper cylinder body oil liquid passes through the second regulating valve via oil circuit
Accumulation of energy sponge 53 is directly entered after 56 all the way, another way enters lower cylinder body, (upper cylinder body oil liquid and pressure accumulation by the first check valve 54
Oil liquid enters lower cylinder body in sponge) closing of second one-way valve 57 at this time, the first check valve 55 is opened, so need to only adjust the second tune
Uninterrupted can be adjusted in section valve 57, realize that compression hydraulic damping is adjusted.
Optionally, it as shown in figure 4, the bottom of hydraulic cylinder 5 is provided with bottom link block 58, is offered on bottom link block 58
For plugging the through-hole of third connecting shaft, in through-hole in be provided with sliding bearing, axis connection is connect with third by sliding bearing.
The top land of hydraulic cylinder 5 is provided with top link block 59, and top link block 59 is provided with for connecting with the fourth connecting shaft
Universal shaft bearing bore avoids intra articular stress caused by the reasons such as equipment error and generates, eliminates radial direction suffered by hydraulic cylinder 5
Power reduces the abrasion of sealing device, increases the service life of hydraulic cylinder 5.Regulation button 541 that there are two the settings of 5 bottom of hydraulic cylinder,
561, for operating to the first regulating valve 54 and the second regulating valve 561, the oil mass for changing asphalt channel realizes damping size
It adjusts.In use, kneed flexion velocity and reset speed can be adjusted by regulation button by spanner, realizes and knee is closed
The adjusting of section.
Optionally, hydraulic cylinder 5 is additionally provided with resetting apparatus, can be with self-resetting to just in the certain angle of knee sprung
Beginning position, resetting apparatus are a piece reset spring of loading in cylinder body, spring energy-storage when compression, and spring releases energy cylinder after release
Body resets, and spring can be set in cylinder piston lower part, sink at 51 inside lower opening of cylinder body.
Optionally, first connecting rod 3 and the first transmission shaft and third transmission shaft by bearing, gasket and jam nut successively into
Row connection, similarly, second connecting rod 4 and second driving shaft and the 4th transmission shaft pass through bearing, gasket and jam nut etc. successively
It is attached.
The various embodiments described above are merely to illustrate the utility model, wherein the structure of each component, connection type and manufacture craft
Etc. may be changed, all equivalents and improvement carried out on the basis of technical solutions of the utility model,
It should not exclude except the protection scope of the utility model.
Claims (8)
1. a kind of hydraulic artificial limb knee-joint of double leval jib, which is characterized in that the knee joint include a upper joint body, once joint body,
Two first connecting rods, two second connecting rods, a hydraulic cylinder and four connecting shafts；
The upper joint body two sides are fixed to plug the first connecting shaft, and the rear end fixation of the upper joint body plugs the second connection
Axis, hypozygal body bottom is fixed to plug third connecting shaft, and fixation plugs the fourth connecting shaft at the top of the hypozygal body, described
First connecting shaft both ends are movably connected with one end of two first connecting rods, the other end difference of two first connecting rods
It is flexibly connected the both ends of the third connecting shaft；One end of two second connecting rods is flexibly connected the two of second connecting shaft
End, the two second connecting rod other ends are flexibly connected the both ends of the fourth connecting shaft, the hydraulic cylinder bottom and described the
Three connecting shafts are slidably connected, and the top of the hydraulic cylinder is slidably connected with the fourth connecting shaft.
2. the hydraulic artificial limb knee-joint of double leval jib according to claim 1, which is characterized in that the hydraulic cylinder include cylinder body,
Piston, pressure accumulation sponge, the first regulating valve, the first check valve, the second regulating valve and second one-way valve；The inboard wall of cylinder block, which encloses, sets institute
It states pressure accumulation sponge and forms accumulator, the cylinder body activity plugs the piston and the cylinder body is divided into upper cylinder body and lower cylinder
Body, the lower cylinder body bottom are connected in parallel one end of first regulating valve and the first check valve, first regulating valve and
The other end of one check valve is connected in parallel one end of the accumulator, the second regulating valve and second one-way valve, and described second is adjusted
Valve connects the upper cylinder body by hydraulic oil channel with the other end of second one-way valve.
3. the hydraulic artificial limb knee-joint of double leval jib according to claim 2, which is characterized in that the hydraulic cylinder also sets up reset
Device, the resetting apparatus is using the spring being fixed in the lower cylinder body.
4. the hydraulic artificial limb knee-joint of double leval jib according to claim 2, which is characterized in that the hydraulic cylinder bottom is provided with
Bottom link block offers the through-hole for plugging the third connecting shaft, setting in the through-hole on the bottom link block
There is sliding bearing, axis connection is connect with the third by the sliding bearing, the top land of the hydraulic cylinder is provided with top
Portion's link block, the top link block are provided with the universal shaft bearing bore for connecting with the fourth connecting shaft, the hydraulic cylinder
Outside is additionally provided with the regulation button for being operated to first regulating valve and the second regulating valve.
5. the hydraulic artificial limb knee-joint of double leval jib according to claim 1, which is characterized in that the upper joint body includes joint
Matrix, the joint baseline top are fixedly installed the standard external connection for joint directly to be connect with receptive cavity to locking
Block, joint matrix side offer the through-hole for plugging first connecting shaft, and joint matrix rear end opens up
There is the through-hole for plugging second connecting shaft.
6. the hydraulic artificial limb knee-joint of double leval jib according to claim 5, which is characterized in that also solid at the top of the upper joint body
Surely it is provided with the flexible buffer block of knee joint internal impact when mitigating embolia.
7. the hydraulic artificial limb knee-joint of double leval jib according to claim 1, which is characterized in that the hypozygal body includes joint
Pedestal, the joint pedestal top rear, which upwardly extends, is provided with connection supporting element, and the head clearance of the joint pedestal is parallel
Setting is correspondingly arranged on the through-hole for plugging the third connecting shaft there are two attachment base on two attachment bases, described
Supporting element outer end offers the through-hole for plugging the fourth connecting shaft.
8. the hydraulic artificial limb knee-joint of described in any item double leval jibs according to claim 1~7, which is characterized in that the knee joint is also
Including one or four cord connectors, the four cords connector side is provided with locking screw holes, is inserted into the lock using lock screw
Tight screw hole is locked.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201821390664.3U CN209564265U (en) | 2018-08-28 | 2018-08-28 | A kind of hydraulic artificial limb knee-joint of double leval jib |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201821390664.3U CN209564265U (en) | 2018-08-28 | 2018-08-28 | A kind of hydraulic artificial limb knee-joint of double leval jib |
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| CN209564265U true CN209564265U (en) | 2019-11-01 |
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| Application Number | Title | Priority Date | Filing Date |
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| CN201821390664.3U Active CN209564265U (en) | 2018-08-28 | 2018-08-28 | A kind of hydraulic artificial limb knee-joint of double leval jib |
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Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN110693632A (en) * | 2019-11-14 | 2020-01-17 | 哈工大机器人湖州国际创新研究院 | Knee joint prosthesis |
| CN114129320A (en) * | 2021-12-02 | 2022-03-04 | 吉林大学 | Double-freedom passive flexible artificial limb ankle joint based on parallel mechanism |
| CN114886625A (en) * | 2022-03-18 | 2022-08-12 | 北京工道风行智能技术有限公司 | Skiing sport knee joint artificial limb |
-
2018
- 2018-08-28 CN CN201821390664.3U patent/CN209564265U/en active Active
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN110693632A (en) * | 2019-11-14 | 2020-01-17 | 哈工大机器人湖州国际创新研究院 | Knee joint prosthesis |
| CN114129320A (en) * | 2021-12-02 | 2022-03-04 | 吉林大学 | Double-freedom passive flexible artificial limb ankle joint based on parallel mechanism |
| CN114886625A (en) * | 2022-03-18 | 2022-08-12 | 北京工道风行智能技术有限公司 | Skiing sport knee joint artificial limb |
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